JPH07228892A - Detergent composition for hard surface - Google Patents

Abstract

PURPOSE:To obtain a detergent composition for hard surface having cleanability, especially extremely improved cleanability on oil stain stuck to the surface of a plastic. CONSTITUTION:This detergent composition for hard surface contains (a) 1-30wt.% of an anionic surfactant, (b) 1-15wt.% of an ampholytic surfactant and/or nonionic surfactant, (c) 0.1-7wt.% of a 1-3C monohydric or polyhydric alcohol and (d) 0.1-7wt.% (solid content) of one or more tea leaf extracts selected from the group consisting of a green tea extract, an oolong tea extract and a tea extract in the ratio of the components (a), (b) and (c) in the range enclosed by points A [(a) 75:(b) 20:(c) 5], B [(a) 52, (b) 8: (c) 40], C[(a) 24: (b) 36: (c) 40] and D [(a) 24, (b) 71: (c) 5] by weight of triangular coordinates shown by figure 1 and the ratio of the component (c) and the component (d) of c/d=1/10 to 5/1 by weight.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition for hard surfaces, more specifically, by incorporating a specific tea leaf extract and a specific surfactant in a specific ratio,
In particular, the present invention relates to a detergent composition for hard surfaces, which has excellent detergency on the plastic surface and in which precipitation of components derived from the tea leaf extract is suppressed.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
Various detergent compositions have been proposed as household and commercial detergents such as tableware detergents, kitchen detergents, and residential detergents. Among them, the detergent containing the extract from tea leaves has low hand roughness (JP-A-63-1966).
93), deodorant (JP-A-62-167400, JP-A-2-102299, JP-A-2-284).
(997 publication) etc., and is attracting attention.

However, although these detergents are excellent in terms of reducing hand roughness and deodorizing effect, they are still unsatisfactory in terms of the detergent's original function of detergency and performance stability after long-term storage. It was In particular, the cleaning performance is not sufficient, and it is particularly difficult to clean oil stains that are one of the stains that are most difficult for users to remove that adhere to plastic tableware made of polymers such as melamine, polyethylene and polypropylene. , It was necessary to carefully scrub.

Further, as a cleaning agent which pays attention to the cleaning property,
Japanese Patent Laid-Open No. 59-47300 proposes a detergent containing an extract of green tea or its heat-processed tea.
It was not able to suppress the precipitation of tea leaf components that occurs over time.

Therefore, there has been a demand for a detergent composition containing a tea leaf extract and in which precipitation of tea leaf components does not occur over time.

[0006]

Under such circumstances, as a result of intensive studies by the present inventor, a specific surfactant and a specific polyhydric alcohol were added to a specific tea leaf extract described below in a specific ratio. It has been found that the compounded composition is excellent in detergency of a hard surface, particularly a plastic surface, and can suppress precipitation of tea leaf components which occurs over time despite containing a tea leaf extract, and completed the present invention. .

That is, the present invention provides the following component (a),
(B), (c) and (d); (a) 1-30 wt% anionic surfactant, (b) 1-15 wt% amphoteric surfactant and / or nonionic surfactant, c) 0.1 to 7% by weight of monohydric or polyhydric alcohol having 1 to 3 carbon atoms, (d) one or more tea leaves selected from the group consisting of green tea extract, oolong tea extract and black tea extract Extract containing 0.1 to 7% by weight as a solid content, and component (a), component (b) and component (c)
The weight ratio is the point A [(a) of the triangular coordinates shown in FIG.
75: (b) 20: (c) 5], B [(a) 52:
(B) 8: (c) 40], C [(a) 24: (b) 3
6: (c) 40] and D [(a) 24: (b) 71:
(C) Within the range surrounded by 5], the ratio of the component (c) to the component (d) is c / d = 1/10 to 5/1 in weight ratio, for a hard surface. A cleaning composition is provided.

The anionic surfactant as the component (a) used in the present invention is not particularly limited, but for example, polyoxyethylene alkyl ether sulfate, α-
Examples thereof include olefin sulfonates, alkylbenzene sulfonates, and alkane sulfonates. These can be used alone or in combination of two or more.

Among these, examples of the polyoxyethylene alkyl ether sulfate include those represented by the following formula (1);

[0010]

[Chemical formula 1] R ¹ O (CH ₂ CH ₂ O) _n SO ₃ M (1)

(In the formula, R ¹ represents a linear or branched alkyl group having an average carbon number of 10 to 16, M represents an alkali metal, ammonium or alkanolamine, and n has an average value of 1.5 to 5.0. It is preferable to use those represented by the following formula.

Further, as the alkylbenzene sulfonate, for example, the following formula (2);

[0013]

[Chemical 2]

It is preferable to use a compound represented by the formula (wherein R ² represents an alkyl group having an average carbon number of 10 to 16 and M has the same meaning as described above).

As the alkane sulfonate, it is preferable to use one in which the hydrophobic group is a linear or branched alkyl group having an average carbon number of 10 to 16.

Further, as the α-olefin sulfonate, it is preferable to use one in which the hydrophobic group is a linear or branched alkenyl group having an average carbon number of 10 to 16.

The content of the component (a) is 1 in the total amount of the composition.
.About.30% by weight (hereinafter referred to simply as "%"), preferably 2.
It is 5 to 20%, particularly preferably 4 to 15%. If the content of the component (a) is less than 1%, the detergency is insufficient,
On the other hand, if it exceeds 30%, the viscosity of the composition becomes too high, which causes problems such as difficulty in injecting the composition (cleaning liquid) from the container.

The amphoteric surfactant as the component (b) used in the present invention is not particularly limited, and examples thereof include alkyldimethylaminoacetic acid betaine, alkyldimethylsulfobetaine, alkyldimethylhydroxysulfobetaine, alkylaminopropionic acid. Examples thereof include salts and alkyl imidazolinium betaines. As these amphoteric surfactants, the average carbon number of the hydrophobic group is 10 to 16
Those which are linear or branched alkyl groups are preferred.

The nonionic surfactant is not particularly limited, and examples thereof include polyoxyethylene alkyl ether, higher fatty acid alkanolamide, and alkyldimethylamine oxide. Among these, the polyoxyethylene alkyl ether has the following formula (3);

[0020]

[Chemical Formula 3] R ³ O (CH ₂ CH ₂ O) _m H (3)

(In the formula, R ³ represents a linear or branched alkyl group having an average carbon number of 10 to 16, and m has an average value of 1.5 to
It is a number of 25.0. It is preferable to use the one represented by

As the higher fatty acid alkanolamide,
Those synthesized from alkanolamine and one or a mixture of two or more kinds of fatty acids whose hydrophobic groups are linear or branched alkyl having an average carbon number of 10 to 16 are preferable, for example, lauroyl diethanolamide, cocoyl diethanolamide, cocoyl monoethanol. Examples include amide.
Among them, particularly preferred is coconut oil fatty acid or diethanolamide of lauric acid.

As the alkyldimethylamine oxide, dodecyldimethylamine oxide, tetradecyldimethylamine oxide and the like are preferable.

Of the above components (b), alkyl dimethyl hydroxy sulfobetaine is used as the amphoteric surfactant and alkyl dimethyl amine oxide is used as the nonionic surfactant from the viewpoint of the effect of suppressing the precipitation of the tea leaf extract component. Preferably.

The content of the component (b) is 1 in the total amount of the composition.
-15%, preferably 1.5-10%, particularly preferably 2-8%. When the content of the component (b) is less than 1%, the detergency of the composition is insufficient, and when it exceeds 15%, the composition becomes too irritating to the skin, and therefore the composition can be manually used. When cleaning, it causes trouble such as rough hands.

The component (c) used in the present invention has 1 to 3 carbon atoms.
The monohydric or polyhydric alcohol is not particularly limited, but examples thereof include monohydric alcohols such as methanol, ethanol and propanol, glycols such as ethylene glycol and propylene glycol, and glycerin. Of these, ethanol, ethylene glycol, propylene glycol, and glycerin are particularly preferable.

The content of the component (c) is preferably 0.1 to 5%, more preferably 0.5 to 4% in the total amount of the composition.

The tea leaf extract of component (d) used in the present invention is one or more tea leaf extracts selected from green tea, oolong tea and black tea extracts. In the present invention, of these tea leaf extracts, it is particularly preferable to use the black tea extract from the viewpoint of cleaning the plastic surface.

As the method for extracting these tea leaf extracts, it is preferable to adopt an extraction method that increases the content of oxidized catechins present in the tannin fraction in the extract. Specifically, as an extraction solvent, methanol, ethanol, acetone, isopropanol, ethyl ether,
It is preferable to use a polar organic solvent such as ethyl acetate or methyl isobutyl ketone, or a solvent such as water having a high extraction rate of oxidized catechins. At this time, the above solvents may be used alone or as a mixture, and the extraction operation may be performed at room temperature or in a heated state.

In the composition of the present invention, the content of the component (d) is 0.1 to 7% as a solid content, preferably 0.5 to 5%, particularly preferably 1 to 3%. When the content of the component (d) is less than 0.1%, the detergency of the composition is insufficient, and when it exceeds 7%, precipitation of the tea leaf component is likely to occur in the composition over time.

In the composition of the present invention, the ratio of the component (a), the component (b) and the component (c) is such that the point A [(a) 75: (b) 20: (c) of the triangular coordinates shown in FIG. ) 5], B
[(A) 52: (b) 8: (c) 40], C [(a) 2
4: (b) 36: (c) 40] and D [(a) 24:
(B) 71: (c) 5], but it is necessary to be within the range surrounded by A '[(a) 72: (b) 21:
(C) 7], B '[(a) 48: (b) 14: (c) 3
8], C '[(a) 42: (b) 20: (c) 38] and D' [(a) 33: (b) 60: (c) 7]. . When the points A, B, C and D do not satisfy the above range, for example, when the ratio of the component (c) is outside the above range, the effect of suppressing precipitation is insufficient, and the components (a) and (b) If the ratio is outside the above range, sufficient detergency cannot be obtained.

The ratio of the component (c) to the component (d) needs to be c / d = 1/10 to 5/1 in terms of weight ratio, but is particularly 1/5 to 5/2. It is preferable. c /
When d is lower than 1/10, a sufficient precipitation suppressing effect cannot be obtained, and when c / d is higher than 5/1, a sufficient cleaning effect cannot be obtained.

The composition of the present invention contains other optional components used in ordinary detergent compositions, such as water, sulfuric acid, hydrochloric acid, sodium hydroxide, and other pH adjusting agents, as long as the desired performance is not impaired. , Fragrances, pigments, antiseptic / antifungal agents and the like can be added as desired.

The detergent composition for hard surfaces of the present invention can be prepared, for example, as an aqueous solution by adding the above-mentioned optional components to the essential components (a) to (d), if necessary, according to a conventional method.

[0035]

EFFECTS OF THE INVENTION The cleaning composition for hard surfaces of the present invention has significantly improved cleaning properties, in particular, cleaning properties of oil stains adhering to the plastic surface, as compared with conventional cleaning agents.
Further, it is possible to suppress the generation of precipitate due to the day, which occurs in a detergent containing a conventional tea leaf extract, and to maintain excellent detergency, which has a high practical value, especially as a dishwashing detergent. Suitable for use.

[0036]

EXAMPLES Next, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples. First, the evaluation of the detergency and the evaluation of the effect of suppressing precipitation used in the examples will be described.

(1) Evaluation of Detergency Sudan III (red dye) as an indicator was added to rapeseed oil in an amount of 0.
1% was added, and 2 g of this was added to a polypropylene container (vertical 1
2 cm, width 10 cm, depth 4 cm), and left for 6 hours to be washed. This was rubbed with a sponge 5 times in 1.5 liters of water containing 0.15% of the composition, rinsed with running water for 10 seconds and then air dried for 1 hour. After air-drying, the degree of stain removal of the container after washing was judged visually and by touch with a finger according to the following evaluation criteria. ⊚: There is no oil residue on the appearance, and it is clean without stickiness when touched. ◯: No oil residue on appearance, but slight stickiness due to oil is felt when touched. Δ: No oil remains on the appearance, but a little stickiness derived from oil can be seen when touched. X: Oily residue is left on the surface and it is quite sticky to the touch.

(2) Evaluation of effect of inhibiting precipitation 100 ml of each composition was sampled in a 100 ml glass bottle having an inner diameter of 4 cm and a height of 7 cm, sealed and stored at 40 ° C. for 1 month. After storage, the lower and upper layers of the container were each dropped with a dropper. After collecting 10 ml of each layer and evaporating and drying each layer, the weight was measured, the rate of change in concentration of the upper layer portion and the lower layer portion was calculated according to the following formula, and judged according to the following evaluation criteria.

[0039]

[Equation 1]

A: Density change rate of less than 0.5%. B: Density change rate of 0.5% or more and less than 5%. C: Density change rate of 5% or more.

Examples 1 to 7 and Comparative Examples 8 to 10 Compositions shown in Tables 1 and 2 were prepared and evaluated for detergency and precipitation inhibiting effect. The results are shown in Tables 1 and 2.
Further, the content ratios of the components (a), (b) and (c) in Examples 1 to 7 and Comparative Examples 8 to 10 are shown in FIG.

[0042]

[Table 1]

[0043]

[Table 2]

From the results of Table 1 and Table 2, the component (a),
(B) and (c) are points A, B, and C of triangular coordinates shown in FIG.
And D and the ratio of component (c) to component (d) is c / d = 1/10 to 5/1, the compositions of Examples 1 to 7 have good detergency and sediment. It can be seen that it has a suppressing effect.

[Brief description of drawings]

FIG. 1 is a triangular coordinate diagram showing the content ratios of essential components and the content ratios of Examples 1 to 7 and Comparative Examples 8 to 10 in the cleaning composition of the present invention.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location C11D 1:88 3:20 3: 382)

Claims (3)

[Claims] 1. The following components (a), (b), (c) and (d); (a) 1-30% by weight of anionic surfactant, (b) amphoteric surfactant and / or non-ionic surfactant. Ionic surfactant 1 to 15% by weight, (c) Monohydric or polyhydric alcohol having 1 to 3 carbon atoms 0.1 to 7% by weight, (d) Green tea extract, oolong tea extract and black tea extract One or two or more tea leaf extracts selected from the group, containing 0.1 to 7% by weight as a solid content, and component (a), component (b) and component (c)
The weight ratio is the point A [(a) of the triangular coordinates shown in FIG.
75: (b) 20: (c) 5], B [(a) 52:
(B) 8: (c) 40], C [(a) 24: (b) 3
6: (c) 40] and D [(a) 24: (b) 71:
(C) Within the range surrounded by 5], the ratio of the component (c) to the component (d) is c / d = 1/10 to 5/1 in weight ratio, for a hard surface. Cleaning composition. 2. The hard surface cleaner composition according to claim 1, wherein the composition is a plastic surface cleaner composition. 3. The detergent composition for hard surfaces according to claim 1, wherein the composition is a dishwashing detergent composition.